BX Petrol - Is is a valve bender???

martinwiseman · Post by **martinwiseman** » 28 Jun 2002, 03:53

Hi,
Me again

I've found out why I have no compression on my BX GTi. The woodruff key on the camshaft pulley has sheared and the valve timing is retarded by about 120 degrees.
An inspection of the camshaft whilst rotating the engine with a screwdriver in the sparkplug hole shows that the exhaust valves are fully open at TDC.
Is this a velve bending situation on the BX GTi. I know the diesel engines bend valves, but do the petrol engines?
Thanks,
Martin.

NiSk · Post by **NiSk** » 28 Jun 2002, 14:32

Yes, I'm afraid it is!
I've had the same experience with a BX 16 TRS - only in that case it was the cam drive belt that gave up.
//NiSk

martinwiseman · Post by **martinwiseman** » 01 Jul 2002, 15:18

For reasons which I don't understand at all, my valves survived the experience. I definitely saw the exhaust valve on cylinder 1 fully open as the piston reached TDC (I even got my wife to check because I didn't believe what I was seeing) but I still have compression on all 4 cylinders.
Martin

alan s · Post by **alan s** » 01 Jul 2002, 18:28

Go buy a Lottery ticket;
Go you halves on the winnings <img src=icon_smile_big.gif border=0 align=middle><img src=icon_smile_big.gif border=0 align=middle><img src=icon_smile_big.gif border=0 align=middle>
Alan S